Malicious PDF — malware analysis report

Static analysis result for SHA-256 e31aee1783db7461…

MALICIOUS

PDF

73.3 KB Created: 2021-06-11 07:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 696cc6866f7ec53ef822cbbf2bf03067 SHA-1: 050326db6bd88f1df87de1e87a6b81758633cb80 SHA-256: e31aee1783db7461aa33006de98ccb6b2acca1a1784796d3c658099b9a8cde35
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous embedded URLs, with at least one pointing to a suspicious domain, likely intended to redirect users to malicious content. The document's structure suggests it functions as a link farm, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pixomot.ru/pbw?utm_term=best+free+barcode+scanner+for+iphone PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374686/normal_60bd3e784db23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480580/normal_604a25611846d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466379/normal_605bb43f2f2d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_6030818123b9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379732/normal_5ffba7df72bf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421970/normal_60bd636dcdf16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486344/normal_60195a641b71a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416660/normal_60bd1c99f1e50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_6026b74e061dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fdab3a650e87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kipizasuzeda.pbworks.com/f/download_harvest_moon_fomt_gba_bahasa_indonesia.pdfIn PDF document text
    • http://jolunatimavu.pbworks.com/w/file/fetch/144504549/how_to_conduct_a_swot_analysis_examples_strategies_and_templates.pdfIn PDF document text
    • http://gupipax.pbworks.com/f/38990338746.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be8ba6c6-d6e6-4f2c-a720-3b1f0c1db46f/88796149953.pdfIn PDF document text
    • http://kimiwodevus.pbworks.com/f/33827411463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8366f724-7b20-4089-8b01-79693f0f15ad/mokot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/735be265-30ba-454a-9bbf-db869047516a/pabawirodobawava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd40df8-61bd-4854-a390-a328e59c32b3/zmodo_camera_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/253c7798-674e-468a-9808-ad37315eec74/is_a_ford_focus_a_good_first_car.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60ff693c-75f5-4d61-9a1e-84594e6f2223/73456707591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba09848a-8443-45d0-ab2c-dc7c9c4e87b4/functional_analysis_clinical_psychology.pdfIn PDF document text
    • http://nukuxim.pbworks.com/f/what_are_the_four_elements_of_communication_skills.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1ED 5400 bytes
SHA-256: 2d0658b8c0940251e51485fc0430196c1f04bdfe61fd21e5c6c4a55cb4d0b28b
font_01_sfnt_off0000f440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF440 10380 bytes
SHA-256: faf6aebdbfcc2304c20bbbefac217ecbf35ced8269256f9bf99482ac5611f213